...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review, C >Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach
【24h】

Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach

机译：初始动力学对耦合输运和粘性流体动力学方法中集体流动的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We evaluate the effects of preequilibrium dynamics on observables in ultrarelativistic heavy-ion collisions. We simulate the initial nonequilibrium phase within a multiphase transport (AMPT) model, while the subsequent near-equilibrium evolution is modeled using (2+1)-dimensional relativistic viscous hydrodynamics. We match the two stages of evolution carefully by calculating the full energy-momentum tensor from AMPT and using it as input for the hydrodynamic evolution. We find that when the preequilibrium evolution is taken into account, final-state observables are insensitive to the switching time from AMPT to hydrodynamics. Unlike some earlier treatments of preequilibrium dynamics, we do not find the initial shear viscous tensor to be large. With a shear viscosity to entropy density ratio of 0.12, our model describes quantitatively a large set of experimental data on Pb+Pb collisions at the Large Hadron Collider over a wide range of centrality: differential anisotropic flow v(n) (p(T))(n = 2-6), event-plane correlations, correlation between v(2) and v(3), and cumulant ratio v(2){4}/v(2){2}.
机译：我们评估了预先质量动力学对超引发性重离子碰撞中可观察的影响。我们在多相输送（AMPT）模型中模拟初始非QuiBibribium阶段，而随后的近平衡演化是使用（2 + 1）相等的相对论粘性流体动力学进行建模的。通过计算AMPT的完整能量动量张量并使用它作为流体动力学演变的输入，仔细仔细匹配演化的两个阶段。我们发现，当考虑预序进化时，最终状态可观察对从舒适到流体动力学的切换时间不敏感。与早期的PreeQuiBibirimics治疗不同，我们没有发现初始剪切粘性张量大。具有凝固粘度的熵密度比为0.12，我们的模型在大范围的中心地位上定量地描述了关于大型强子撞机的PB + Pb碰撞的大量实验数据：差分各向异性流量V（n）（p（t） ）（n = 2-6），事件平面相关，V（2）和V（3）之间的相关性，累积率V（2）{4} / V（2）{2}。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号